Harry Martin is the name of:

• Harry B. Martin (1873–1959), American cartoonist and golf writer
• Harry C. Martin (1854–1917), Wisconsin politician
• Harry L. Martin (1911–1945), soldier
• Harry S. Martin (born 1943), librarian and professor
• Henry Martin (socialist) (1864–1951), known as Harry, British socialist
• Harry Martin (field hockey) (born 1992), British field hockey player
• Harry Martin (cyclist) (1889–1922), Canadian cyclist
• Harry Martin (judge) (1920–2015), former Associate Justice of the North Carolina Supreme Court
• Harry Martin (urologist) (1890–1961), medical director of 20th Century Fox Studios and third husband of Louella Parsons